105 lines
4.0 KiB
Python
Executable File
105 lines
4.0 KiB
Python
Executable File
#!/usr/bin/python
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'''
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postfix-add-filter - A script to append new services to Postfix master.cf to
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simplify integration of content filters.
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Copyright (c) 2008 Scott Kitterman <scott@kitterman.com>
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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'''
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__author__ = "Scott Kitterman"
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__email__ = "scott@kitterman.com"
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__version__ = "0.1: August 3, 2008"
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import sys
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import shutil
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import os
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import time
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import fileinput
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def makepolicy(name, method, flags, user, argv):
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# Recommendations from the Postfix SMTPD_POLICY_README.
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header = """# ==========================================================================
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# service type private unpriv chroot wakeup maxproc command + args
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# (yes) (yes) (yes) (never) (100)
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# ==========================================================================
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# Added using postfix-add-policy script:
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"""
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policy = ("""%s unix - n n - 0 %s
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flags=%s user=%s argv=%s
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""" % (name, method, flags, user, argv))
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additions = header + policy
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return (additions)
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USAGE = """To add a new policy service to your master.cf:
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% sudo postfix-policy-add {policy service name} {user} {file (full path)}
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Example:
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% sudo postfix-policy-add policyd noboby /usr/bin/policyd
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Adds the following to master.cf:
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""" + makepolicy('policyd','method','flags', 'user', '/usr/bin/policyd') + """
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To output this usage message:
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% postfix-add-policy
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"""
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if __name__ == '__main__':
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import sys
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if len(sys.argv) < 6:
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print USAGE
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elif len(sys.argv) == 6:
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policyname = sys.argv[1]
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user = sys.argv[2]
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flags = sys.argv[3]
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method = sys.argv[4]
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argv = sys.argv[5]
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# Read in master.cf and check to make sure specified name isn't
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# already used
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masterfile = open('/etc/postfix/master.cf', mode='r')
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master = masterfile.readlines()
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masterfile.close()
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bailout = False
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for line in master:
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if policyname in line:
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# Policy name already used, print error and bail
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print ('Selected policy name, %s, already in master.cf. \
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Master.cf not updated.' % (policyname))
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bailout = True
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break
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if not bailout:
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# Make backup copy
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backupname = '/etc/postfix/master.cf.' + str(int(time.time()))
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shutil.copy2('/etc/postfix/master.cf', backupname)
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# Make working copy
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shutil.copy2('/etc/postfix/master.cf', \
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'/etc/postfix/master.cf.working')
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# Add stuff in
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stuff = makepolicy(policyname, method, flags, user, argv)
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# Append stuff to the working copy:
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newmaster = open('/etc/postfix/master.cf.working', mode='a')
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newmaster.writelines(stuff)
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newmaster.close()
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# Put working copy in place.
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shutil.move('/etc/postfix/master.cf.working', \
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'/etc/postfix/master.cf')
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else:
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print USAGE
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